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Finding the Fourth Proportional to 114,188.38, 157,730.58 and 87,658.72

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Solution

The fourth proportional to 114,188.38, 157,730.58 and 87,658.72 is: 121,084.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,188.38 : 157,730.58 = 87,658.72 : x
  2. Step 2: Convert to fraction form
    114,188.38/157,730.58 = 87,658.72/x
  3. Step 3: Cross multiply
    114,188.38x = 157,730.58 × 87,658.72
  4. Step 4: Simplify right side
    114,188.38x = 13,826,460,747.66
  5. Step 5: Solve for x
    x = 13,826,460,747.66/114,188.38
  6. Step 6: Final answer
    x = 121,084.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.